Mining machine



May 19, 1931.

N. D. LEVIN- MINING MACHINE Original Filed June '8, 1925 4 Sheets-Sheetl will TTORNEYSK May 19, 1931. ND. L11- vm 1,805,876

MINING MACHINE Original Filed June 8, 1925 4 Sheets-Sheet 2 nu la(dif/lll.

WITNESS:

bnf

A ORNEYS.

May 19, 1931. v NL. D.. Ll-:vlN 1,805,876

MINING MACHINE original Filed June s, 1923y 4 Sheets-sheet 3 WITNESS:

INVENTOR.

q 147i n BY M? @MA y www@ A TTORNEY` N- D. LEVIN May 19, 1931.

Original Filed June. 8, 1925 4 Sheets-Sheet 4 fly. 10

Patented May 19,4 1931 "STATES messie .Para nr ice Nits n. LnvIN,.oroonniiIBUs. OHIO; AssIGNORmornnanrrnnr MANUFACTURING eoMrANY, OFCOLUMBUS; OHIO; A oonronarionor OHIO#L MINING. MACHINE Applicationfiled' .T une, 8) 19,28',y Serial No:v 64.4;154. Ilfe'nevlclyAprilz18,'i929:

The present inventionrelates ,to` certain new and useful: improvementsin. mining, ma.- chilies,L and. particularly to. that, class of mine ingmachine which is provided With a. main .frame adapted. to rest uponandslide ini any direction4 over the mine.. 1"l`oo.r.,an4 elongatedhorizontally extending cutter yarmi attached to said1i-ramdandmeansto.moveand gmde said .main frame. over the mine floor tocause` the mcutter armto engage-f the coal to cut` it.

The especial. object. ofv thisinvention is to provide,.in ai machineofthe4 class, described, improved, feeding and. guiding; mechanism wherebythe machine may hemoved over4 the ,Y 1.5 ymine floor at thespeed.. mostjappropriate to the purpose intended..

- rEhe preferred embodiment ,ot my invention lis. disclosed in. theyi'ollovving` speciication. and

illustrated ini the-accompanying drawings of Fig. 1 isz a. plan view offthe. machine the cover plates being` removedf and. certain partsbrokenaway toreveal. Otherparts..

Fig. 2 is` a side elevationofffthe machine. il

lustratediinFig'. l.

Fig, 3, s a somewhat diagrammatiehori'- Zontal sectional View showingthe` arrangement of gearing inthe machine .illustrated in Figs..1= andQ.

Fig.. lis a vertical. sectional 'view'taken along. the line IV-*LVOffFig,.1"..

l Fig.V 5. is. a vertical sectional View. taken along the-,line V-V ofFig, 1....

Fig. 6^-is a diagrammatic end clutch shiftingmechanism associatedvvitfhthe highspeed Winding drum., Y' A Fig; 7 is a diagrammatic: plan.vierv-Y o the devices illustratedin.I Fig` 6. l

Fio'. 8 is av sectional view. takenl along the :1 linev Vilbel-71111 ofFig. 3.. Y

Figs; 9 and 1-0 are diagrams illustrating one of the methods-ofoperatingmy.v improved mining' machine in a mine room.

Like numerals refer. to similar parts.. in the several:y iigures. 'v

Referring' tol the drawings the numeral 1 indicates the main tramecasting upon which theoperative partsofthe machine are mounted. Thismain iranieeastingtisy attached to the upwardly turnediiangesQ-.of theslridipan .view ofthe.

31` whichl is `composed' Oii Y'rolled steel plate,

and` which serves las abroad supporting baseV adaptedto rest uponv andslide in any direction Overthe fioonof the mine. Attached. to the.mainframe castingA l, andprojeoting: longitudinally thereof, is an.elongated. cutter arm LLof., Well. knownv constructiom having`r gilideJ-vvzryrs4 Whereinftravelsthe cutter chainz in the struction suitabletothe Aconditions under which.v the machine operates... For purposesyoli.iilustrationl` I. have shownl an electric mo,-

.tor havingran armature dshaft 9. to which1 is secured/thebevel.piniorrsl The pinion. 10 engages.- amaster gearll rigidlylconnected with. a; sleeve n12. mounted. upon. the vertical 'shaft7..and this sleeve 12 constitutes thedriv.-V

ing member from. which the severalv elements of the machine areactuated.v As all otY these devices. areqivellunderstood: in.Vthe-mining machineara. andi asthey form no. part ini the presentinvention,.y further description.` of them at this time is not thoughtto be required. Formed' upon. the.-sleeve 12 is aworm13 which engagesaWorin Wheel14;y keyedtothe llfiorizontal power shaft.15ifwhich.isjournaled `in bearings, 161 and l1'Z` formed inthey main '.iirame,casting 1..l Mounted upon .the power shatt-15, and` connectabletheretoby a suit,- able .triction-.clntch, is a' spur pinion'- 118 which mesheswith. a4 spur gear 19 ofthegfeeding mechanism gear train. f ThisfrictionclutchV is f lpreferablyof the Wellknowmmultiple disc typeconsisting oa. driving member, QOkeyed tothe shaft 1v5, and.'a driven.memberr21' attachenl, to the'L extension sleeve '22 oat the loinl ion1.8.1 These. driving-and. driven members arefconnectable together byVthe friction. discs 23. Which` are. adapted. to be pressed together bythe pressure; plate 24 tok producethe frioti'on necessarytotransmitpovver tor the actu.-

ation of the spur pinion 18. Attached to the clutch member 21 by anysuitable means, is a circular cover plate 25 which entirely encloses themechanism of the clutch. A pressure screw 26 is threaded through theplate 25, and its inner end impinges upon the pressure plate 24. To theouter end of the screw 26 is fixed a hand wheel 27 by the manipulationof which the screw 26 may be rotated relative to the cover plate 25 tovary the pressure upon the discs 23, and thereby control the actuationof the clutch.

The feeding mechanism comprises a winding drum 28 to which is attachedone endlof the feed rope 29 which is adapted to be wound upon said drum.The free end of the rope 29 is adapted to Abe attached to a. suitableabutment, external of the machine, towards which the machine will bedrawnwhen the rope is wound upon the drum. The drum 28 is freelyrotatable upon the sleeve 30 which, in turn, is eccentrically ournaledupon the stud shaft 31 fixed to the main frame of the machine. Formed onthe inner surface of the drum 28 is an internal gear 32 adapted toengage a spur wpinion 33 which is attached to the outer end of a counter.shaft 34. The counter shaft 34 is journaled in suitable bearings 35 ofthe machine frame, and to its inner end is attached the hereinbeforedescribed spur gear 19 from vided with a spring pressed latch 37 adaptedto engage suitable apertures in the stud shaft 31 to hold the sleeve 30in the preferred position of angular adjustment. Y

Mounted upon the power shaft 15 is a sec- I ond friction clutchcomprising the driving 'member 38 keyed to the sha-ft 15, and a drivenmember 39 adapted tobe connected thereto by a plurality of frictiondiscs 4() in the manner well understood in the'art. A pressure plate 41freely mounted concentrically upon the shaft 15 is arranged to contactwith the outer disc of this series, and this pressure plate is engagedby a plurality of pressurerods 42 extending longitudinally of the Yshaft 15. The pressure rods 42 abut against a ball bearing thrustcollar'43 carried by the screw nut 44, and the screw nut 44 is threadedto a y sleeved extension 45 of the driven member 39 ofthe clutch. Formedon the periphery of the nut 44 is a spur gear 46 which engages with agear wheel 47 fixed to the control shaft '48. The control shaft 48 issupported in suitable journal bearings of themain frame, and is providedwith a hand wheel 49 in position convenient to the hand of the operator.By the manipulation of the hand wheel 49 the nut 44 may be rotatedrelative to the sleeve 45 to cause it to move longitudinally thereof tovary the pressure of the rods 42 upon the pressure plate 41, and therebycontrol the actuation ofthe clutch.

' Freely rotatable upon the shaft 15, adjacent the last describedfriction clutch, is a hub 5.0 having a radially extending flange 51 onthe outer edge of which is formed a winding drum 52, known asthehandling drum. Attached to and windable upon the handling drum 52 is ahandling rope 53 vadapted to be carried around suitable guide sheavesupon the machine frame, to extend in any direction therefrom,and to beconnected to a suitable abutment external of the machine, towards whichthe machine may be drawn by the winding of the rope 53 upon the drum 52.Longitudinally slidable upon the hub -is a collar 54 to which isattached the clutch pin 55. These pins 55 extend through apertures inthe flange 51 and are adapted to engage with suitable apertures in thedriven clutch member 39, constituting a pin clutch to positively connectthe handling drum 52 therewith. Movement of the collar 54 longitudinallyof said hub is effected by a forked shifting lever 56 pivoted upon astud bolt 57 .secured to the machine frame, and having lugs 58 whichextend into the groove 59 formedin the collar 54. A notch 60 formed inthe shifting lever 56. engages the crank pin 61 at the lower end of therocker shaft 62, and a handle 63 formed on the upper end of the shaft62, affords convenient means for the rotation of said shaft to shift theclutch pins l55 into andout of engagement with the clutch member 39.

Formed Von the periphery of one of the flanges of the drum 52 is a spurgear 64 adaptved to engagementV with a spur pinion 65 formed on the endof the'counter shaft 66. To the opposite end'of the counter shaft66 .isfixed a spur gear 67 adapted to engage with a spur pinion 68 formed'onthe extension sleeve 45 of the friction clutch. The counter shaft 66 isjournaled eccentrica-Uy in. the sleeve 69, and the sleeve 69 isrotatable in a ournal bearing 7() formed on the machine frame. To

the sleeve 69 is attached an `arm 71 by which said sleeve may be rotatedkin its bearing, and a springvpressed latch 72, carried bv the arm 71,is adapted to engagement with suitable apertures 73 in a flange 74 ofthe machine frame to hold said sleeve in the preferred position ofangular adjustment. By the rotation of the sleeve 69 the counter shaft66 will be moved towards or from the power shaft 15 to cause theengagement or disengagement oi the gears 64, 65, 67, and 68.

Formed on the shifting lever 56 is an extension arm 7 5'- Which projectsinthel directions eff' the countershaftl 66', and? on theend oilthe-arm-isformed al key lugI iir alignmentwvitha lfeyway 7.7 cuttransversely ot the sl'eeve 69. VEhe proportions of 'these parts aresuch that when* theclutch pins arein the engaged position the keying 76-Willi project into'ethe key Way 77'topreventrotation of`v the sleeve 69thereby holding the counter shaft gears out oi engagement When theclutch pins' 55* are in their disengaged position, the sleeve' 69 willhel'ffree te` rotate to throw the counter shaft' gears intoengagement.Vthen the* counter shaft gears are in engagement Contact' offtheley lug76 with' theA periphery of tthe'sleeve G/QiWillf preventmovement' oftheclutch pins 55 towards their engaged posi@ tion. Bythis arrangemento-'parts the-si'multaneousengagement of; the counter Ashaft gea-rs andpinclutchis effectively prevented.

n one operation of' the machine it may he positioned upon the floor ofthe" mine room adjacent the'right hand! rih Wall., withv thecutter armprojecting towards the coal Lfacel as illustrated in Fig: 9E The ro pe*29is then drawn out from the Winding' drum12'8passed around the guidesheavefT-S at the left hand outer corner or t-he'machine, and attachedtoa suitable anchor Jack-1 79" positioned ad'ia'cent the coal face attheleie-tha-nds-itleofthe room.

gaged; position, the counter' shaft' 66 shil ted to cause4 theengagementof the low speed gears. I p Y Wheel 49 t-'hef friction clutch Willi4transmit power tothe Winding drunr 52tor wind the Y rope 53x and thrustthe cutterarin4 longituL n dinally-into'thecoal, to fornrthesumping orAfter the machinev is iiull'y entering cut. sumped the rope 29 isremovedl ifronrthe`Y sheave 78 a'ndfpassedf around th'e-'shearve' 82' atthe lef-t hand inner corner of the macl'iine frame, after which`- thehand Wheel 2T? is manipulated to cause the discs inthe friction clutch'to actnate the Winding drum 28 to Wind" the rope-292and drawthemachinefla tera-ll-y towards tlieanchor jack 791th' cut'a lterf acrossthe coal face. The hand Wheelll-Sis at the same time` manipulated' topermit a slippage oftheclutch discslsufiicient to permit theunXv-indin'g: ot the-rope 53 against a; nictional resistance whichmaintains-the angular relation ot themachine tothe coal :tierce:v

After the completion oii, the lient the ma-v By the manipulation: of"the Ahand By'themanipulation of the handwheel'z-Q'tfhe winding drum 52Willh'e' actuated to dra-W the machine towards theloading position.

For. efficient operation the various moveL mentsoi'. the vmachineshouldbe executed as quickly'as conditions Will permit,yandftheproportions ofthe gearing above` described: are such. as to producetraveling speeds: proporL tienatetothe resistance encountered.

l/Vhil'e Workinglaterally across the coaliiace theentire side of thecutter arm is inpcontact with; the' coal, producing' a; maximumresist;-v

ance to the advance ot the machine. 'The gearing through which theWindingl drum'. 2.8

is actuated is so proportioned that saididrum Wallf revolve at a`relatively' low speed, which cutting. In practice this speed is approximately three feet per minute, althoughun'der favorable conditions themachine may' ,he

adaptedto out asfast as four or fivefeet per minute. .Y Y Y iVVhile'moving the idle machine about the fl'oor'ofv the mine, toorfrom'operative positi'on, the resistance to suchmovement is4 rela:-

By this arrangement of gearingthe mairo chine may he moved over thefloor of the-mineA ata relatively lowv speed for lateral cutting,

atl an intermediate speed for sumping, and at arelatively high speedorhandling, thereby affecting greatly'increased eiliciency of operarOII. Y

VVhatI claim is Y y In` a machineof'the class described, the

combination`r With a mainframe adapted to Vrest upon and slide in anydirection over the mine floor, of an elongated kerf cutter projectinghorizontally from said main frame, power devices upon the main frameadapted to actuate the kerf cutter, a flexible draft mci'nber adapted tobe connected with a suitable abutment external of the machine, windingmeans upon the machine adapted to exert strain upon said draft member tomove the machine towards said abutment at a relatively low speed, asecond flexible draft member adapted to be connected with a suitableabutment external of the machine, winding means upon the machine adaptedto exert strains upon the last mentioned draft member to move themachine towards the last mentioned abutment, a high speed connectionbetween said power devices and the winding means for said second draftmember, an intermediate speed connection between said power devices andthe winding means for said second draft member, and means for renderingeither of said connections active as and for the purpose set forth.

2. In a machine of the class described, the combination with a mainframe adapted to rest upon and slide in any direction over the minefloor, of an elongated kerf cutter projecting horizontally from saidmain frame, power devicesupon the main frame adapted to actuate the kerfcutter, a flexible draft member adapted to be connected with a suitableabutment external of the machine, winding means upon the machine adaptedto exert strain upon said draft member to move the machine towards saidabutment at a relatively low speed or to resist its movement from saidabutment, a second iiexible draft member adapted to be connected with asuitable abutment external of the machine, winding means upon themachine adapted to exert strain upon the second draft member to movethemachine towards the last mentioned abutment, a high speed connectionbetween said power devices and the winding means for said second draftmember, an intermediate speed connection between said power devices andthe winding means for said second draft member, and manually operablemeans for rendering either of said connections active as and for thepurpose set forth.

3. In .a machine of the class described, the combination ywith a mainframe adapted to rest upon and slide in any direction over the minefloor, of an elongated lrerf cutter pro- `iecting horizontally from saidmain frame, power devices upon said mian frame adapted to actuate theseveral elements of themachine, a flexible draft member adapted to beconnected with a suitable abutment external of the machine, means toexert strains upon said draft member to move the machine towards saidabutment at a relatively low speed, a second flexible draft memberadapted to be connected with a suitable abutment external of themachine, means to exert strain upon the last mentioned draft member tomove the machine towards the last mentioned abutment, a high speedconnection between said power devices and the strain exerting means forthe second draft member, an intermediate speed connection between saidpower devices and the strain exerting means for thc second draft member,and manually operable means for rendering either of said connectionsactive as and for the purpose set forth.

et. ln a machine of the class described, the combination of a mainframe, a power shaft mounted on said frame, a winding drum, a gearconnection between said power shaft and said drum, means for controllingthe operation of said gear connection, means to control transmission ofypower from said power shaft to said g-ear connection, a second windingdrum, a gear connection from said power shaft to said second drum, asecond drive connection from said power shaft to said second windingdrum and means for locking in disconnected position one of theconnections with said second drum upon connecting the other.

5. In a machine of the class described, the combination of a main frame,a power shaft on said frame, a winding drinn having a gear, a drivinggear 'operable from said powcr shaft to engage said drum gear, means forcontrolling the co-operation of said gears, manually operable means tocontrol transmission of power from said power shaft to said drum drivinggear, a second winding drum having a gear, a gear connection betweensaid power shaft and said drum gear, a second driving connection betweensaid power shaft and said second drum and means forv locking indisconnected position said second driving connection upon the operationof said gear connection.

6. In a machine of the class described, the combination of a main frame,a power shaft on said frame, a winding drum having a gear, a drivinggear operable from said power shaft to engage said drum gear, means forcontrolling the engagement of said gears, manually operable means tocontrol transmission of power from said power shaft to said drum drivinggear, a second winding drum having a gear, a gear connection betweensaid power shaft and said drum gear, a manually operable second drivingconnection between said power shaft and said second drum and means forlocking in disconnected position one of the driving connections to saidsecond winding drum upon connecting the other.

7. In a machine of the class described, the combination of a main frame,a power shaft mounted on said frame, a winding drum having a gear, agear connection between power shaft and said drum, means for controllingthe engagementV of said winding drum gear with said gear connection, afriction clutch to control transmission of power from said power shaftto said driving gear, a second winding drum, a gear connection betweensaid second winding drumV and said power shaft, a direct connectionbetween said winding drum and said power shaft and means for locking indisconnectedl position said direct connection upon the actuation of thegear connection to said second winding drum. Y s v 8. In a machine oftheclass described, the combination of a main frame, a power shaft disposedtransversely of the frame, a winding drum having a gear, a driving gearconnecting said power shaft and said drum means for controlling thecooperation ofsaid winding drum gear with said driving gear, a manuallyoperable friction clutch mounted at one end of said power shaft toconnect said shaft and said driving gear, a second winding drum having agear, a driving gear connection between said power shaft and said seconddrum, means for shifting said second drivingv gear from active tofinactive position, a manually operable friction clutch for directlyconnecting said power shaft and said second drum, and means controllingthe driving connections between said power shaft n0 and said seconddrum, whereby oneof said driving connections is held inactive when ltheother is in active position. y

9. In a machine of the class described, the combination of a main frame,a power shaft disposed transversely of the frame, a winding drum havingan eccentrically mountedgear, v a driving gear adapted to connect saidpower shaft and said drum, means for shifting said eccentrically mounteddrum gear from active to inactive position, a manually operable frictionclutch mounted at one end of said power shaft to connect said shaft andsaid driving gear, a second winding drum having a gear, an eccentricallymounted drivf B ing gear connection between said power shaft and saidsecond drum, means for shifting said eccentrically mounted seconddriving gear from active to inactive position, a manually operablefriction clutch forl directly connecting said power shaft and saidsecond drum, and means controlling the driving lconnections betweensaid'power shaft and said second drum whereby one of said drivingconnections is held inactive when the other is in active position. n Intestimony whereof I have hereunto set my hand. NILS'D. LEVIN.

